The _quamtum mechanical_ model of the atom states that an electron's exact location within an atom can not be determined, but its probable location can be estimated within a three-dimensional region called an atomic orbital and that an electron's properties within an orbital can only be described by a set of mathematical values called a quantum number.
R=U/I so
U=RxI
U= 10 x 42
U= 420 volts
B) 20-40 percent
I hope this helps
<span>1 C = 6.24150965(16)×10^18 electrons
31.25 x 10^18 electrons / (6.24150965(16)×10^18 electrons / C) = 5.007 Coulombs
</span><span>I hope this helps. </span>
Hi! Check out my valid counter argument below!
"The accident only released harmless gamma rays."
Hope I helped!